Device and process for feeding roller mills



Patented Apr. 3, 1923.

UNITE STAT ears-NT orrics. 1

CHARLES F. GAUNT, or BIRMINGHAM, ENGLAND.

MEDAL-RIBBON MOUNT.

Application filed March 10, 1921. Serial Ito 451,363. i

To all whom it may concern: I Be it knownthat I, Crmnmgs FREDERICK GAUNT, of the city of Birmingham, England, a subject of the King of Great Britain,

5 haveinvented certain new and useful Improvements in Medal-Ribbon Mounts (for 1 which I havefiled an" application in England April 21, 1917, Patent No. 115,069);

and I do hereby declare that the followingis a full, clear, and exact description thereof. This invention has reference to medal ribbon bars ormounts and consists ofthe here-,

in described improved method of, or means for, permanently attaching a medal ribbon or medal ribbons thereto It has previously been proposed for a medal ribbon bar to be formed of troughsection with upstandingedges and for the ribbon when folded roundthe front ofthe 2 bar and with itsends in the trough to .be

secured by a wire clip or by a second-removablebar secured in the trough by screws or other suitable means,such asby flat headed studs which pass through slots in the removable bar in'the trough and it has-also;v

' been proposed for these studs toflbelengaged by asplit pin at the back. The act of placing the removable bar over the ends of the ribbon or ribbons in the trough has the, of feet ofdrawing theribbon tightly round the front of the ribbon bar and securing the ribbon thereto as when the ribbon bar is fixed the ends of the ribbons are firmly clamped in thetrough between the ribbon bar and the removable bar. It has'also been proposed furnished with upwardly. projecting prongs like'the prongs of a paper fastener adapted to pass through the garment and to be opened out at the back of the same so as to secure the ribbon bar thereto. 1

, For the purpose ofmy invention a medal ribbon bar consists essentially of two bars namely a, front bar and a back bar. The

front bar is of elongated form with upstan ding parallel side edges so that the bar is of shallow trough section. The back bar is a parallel sided fiat section bar the width'of which is slightly less than the inside width of the trough of the front bar and the thickness of this back bar is slightly less than the depth of the upstanding sides of the front bar. In fixing the ribbon or ribbons, to the ribbon bar, the ribbon is or the ribbons are folded round the front of the front bar and the ends of the ribbon are folded over the sides of the trough and into the interior of the top of the ends of the ribbon or ribbons and there fixed by press tools or the like which close the side edges of the trough firmly on to and around the edges of. the back bar and also fixing the ribbon or ribbons'to the compound bar. I The back bar is preferably fitted with a brooch pin and;

catch orother suitable means forattachment of the medal ribbon bar to a coat or other garment.

For full comprehension however" of my invention reference must be had to the ac-scompanying drawings in which similar reference characters indicate the same parts and wherein r F igure 1 is a cross sectional isometrically projected back View ofa medal ribbontl bar constructedin accordance with this invention shewing also some' medal ribbons fixed thereto;

Figure 2 is a cross sectional elevation of the back andv front bars of the same sep-cv arated the front bar being shewn in the shape which it has before its side edgeszare closed down on tothe .ribbonia'nd back bar; Figure 8iis a cross sectional elevation'of the same before'the side edges of the front backcbar; a

Figure 4 is a cross sectional elevation of a modified form of'fronti bar for the ribbon baraand bar are closed down on to the ribbon and projected back view ofanlodified formof theback bar. Y

' Referring to the drawings it will beiseen that the medal ribbon bar consists essentiallygw iFigure5 is a cross sectional isometrically Patented Apr. 3, 1923.

WED STATES 1 4 3? rarest. orries;

ALEXANDER GILLESPIE, 0F PITTSFIELD, ILLINOIS.

DEVICE AND PROCESS FOR FEEDING ROLLER MIIJZIS.

Application filed .Tu1y l8,

T o all whom it may concern;

Be it known that I, ALEXANDER GiLLnsrin, a subject of the King of England, residing at Pittsfield, in the county of Pike and State of Illinois, have invented new and useful Improvements in Devices and Processes for Feeding Roller Mills, of which the following is a specification.

This invention relates tothe art of milling flour, and has special reference to improve ments in means for feeding wheat to the rolls of a roller mill.

As is well known to those skilled in the art, the two rolls of a roller mill rotate at different rates of speed, the differential speed, or, the rate of rotation of the slow roll relative to the fast roll, determining the capacity of the machine, In ordinary practice there is located above the two rolls a third, or feedroll, which regulates the amount of grain allowed to pass toithe rolls for grinding or reductlon.

So far as I am aware, no attempts, prior.

to my invention, have been made to accurately regulate the amount of grain passed to the grinding rolls, when proper spacing of the grain and the relative speed of feed roll to slow roll are considered, so that when each grain to be ground takes its position .on the slow roll and is opened out by the fast roll, it will approximately cover the amount of surface on the slow roll allotted to it, so that the grinding surfaces in action will be fully used to their capacity relative to the highest efficiency. The smooth feed roll is the most used and bestlmown agent of feeding wheat .to rolls, but no spacing of the grain fed by it relative to the slow roll can be accomplished with its use, for the to provide means whereby the amount ofv grain passed to the rolls will be regulated according to the surface capacity and speed of rotation of the slow roll, so that exactly the amount. ofgrain that can be ground b the rolls in each revolution of the slow ro 1 Will be fed to the rolls.

1921. Serial No. 485,605.

With this object in view, my invention consists in providing a feed roll having indentations therein regulated in proportion to the surface dimension of the roll, which indentations arecont-inuously filledwith individual grains, respectively, and discharge the grain in the revolution of the roll to the grinding rolls, and in prop ortioning the speed of rotation of the feed roll to-that of the slow roll whereby the number of grains r of wheat passed 'to the slow rollin eachp revolution thereof can be determined with mathematical accuracy.

i In the accompanying drawingsa Figure 1 is a view in cross-section of the upper part of a roller mill, showing the general arran ement of grinding rolls in a single type machine;

Figure 2 isa perspective View of on the line 3-3 of 'Figure; 1, viewed in the direction of the arrows, and-showing one connection for the feed and form of driving grinding rolls.

Figure dis a view in broken elevation on an enlarged scale showing one form of i den-tatron; Y i v I then same, a portion of the' casing being broken away to better illustrate the construction and I the driving mechanism beingiomitted; Figure 3 is an ideal sectional view takenand feed Figure 5 is asimilar view showing another formiof indentation; and

Figure :6 is EU'SlJyILlliII view showing ,{t/Stilll v s .90

further form of indentation.

Referring now to the drawings, the nuv meral 1 indicates a casing of a roller mill,

mounted inwhich, in co-operativerelation,

is a fast rgoll Qand a slow roll 3. The shaft i 4 of the fast roll is provided witha pulley 5 by means of which it is dri'ven'bya belt 3 6 in the usual way. On one end of the shaft l is a conical pulley 7. The numeral-'8 indicates a feed roll mountedin the'casin'g above the grinding rolls 2 and 3, the shaft 9 of said feed roll being provided with a conical pulley LO, oppositely disposed with respect to the pulley 7. A belt 11 is passed over the respective pulleys 7 and 10 whereby the feed roll 8- is driven from the shaft of the fast roll 2. The shaft 12 of the-slow roll is provided with a pulley 13 by means of which it is driven by a belt 14: in the usual manner. As will be understood, by

moving the belt 11 in one direction or the other on the pulleys 7' and 10, the speed of rotation of the feed roll 8 may be varied to definite and predetermined relation to th surface area of said slow roll.

2. In a roller mill in combination with the differential grinding rolls, a feed roll for feeding grain thereto, and means for regulating the numerical feed of the grain to the grinding rolls by the feed roll to cause the number of grainsfed to the grinding rolls in each revolution of the slow roll thereof, to be the same as the total number of a given unitof measurement contained in the surface area of said slow roll, said unit of measurement being a square whose area is substantially equal to the area of a flattened grain of wheat.

3. In a roller millin combination with the differential grinding rolls, a feed roll having its surface provided with cavities, and means for continuously filling said cavities with individual grains and for delivering the grains from the cavities to the grinding rolls, the number of cavities in the feed roll and the speed of rotation of the feed roll relative to the slow roll of the differential grinding rolls, being such that, for a single revolution of said slow roll, said feed roll will deliver to the grinding rolls, a number of grains, the totality of whose areas when flattened, will substantially equal the surface area of the slow roll.

4. In a roller mill in combination with the differential grinding rolls, a feed roll provided on its surface with cavities, each of which is included within an allotted space of predetermined area and the number whereof bear a definite numerical relation to the surface area of the slow roll, means for supplying grain to the cavities of said feed roll, means for causing said slow roll and feed roll to expose the same amount of surface area for each revolution of the slow roll, and

it means for rotating said feed roll to cause its cavities to deliver their grain to the differential rolls for grinding.

5. In a roller mill in combination with the differential grinding rol1s, a hopper located above the same for containlng grain, a rotatable feed roll located below the discharge end of the hopper and provided over its periphery with cavities, the totality of the areas allotted to each having a predetermined relation to the surface area of the slow roll, and which cavities are continuously filled with grains from the hopper, and discharge said grains to the grinding rolls in the rotation of the feed r011, means for rotating all of said rolls, and means for proportioning the surface travel of the feed roll to that of the slow roll to cause the number of grains delivered by the feed roll to be such that the total area of the grains, when flattened out by the fast roll of the differential grinding rolls, will substantially equal the surface area of said slow roll, whereby the latter will be theoretically covered by the grains without overlapping thereof.

6. In a roller mill in combination With the differential grinding rolls, a feed roll having its surface provided with cavities, and means for continuously filling said cavities with individual grains and for delivering the grains from the cavities to the grinding rolls, the number of cavities in the feed roll and the speed of rotation of the feed roll relative to the slow roll, being such that for a single revolution of the slow roll, said feed roll will deliver to the grinding rolls a number of grains whose total area, when flattened out, will substantially equal the surface area of the slow roll, and a variable feed drive for the feed roll operated from one of said grinding rolls, whereby the number of grains delivered by said feed roll to the differential grinding rolls per hour may be varied, if desired, at the will of the operator.

7. The method of feeding grain to the differential grinding rolls of a roller mill, which consists in regulating the numerical feed of the grain to cause the number of grains passed to the grinding rolls per revolution of' the slow roll of the differential grinding rolls, to be such that the totality of the area of the flattened grains shall substantially equal the surface area of said slow roll.

8. The method of feeding grain to the differential grinding rolls of a roller mill, Which consists in controlling the numerical feed of the grain to cause the number of grains fed to the grinding rolls in each revolution of the slow roll thereof, to be the same as the total number of a given unit of measurement contained in the surface area of the slow roll, said unit of measurement being a rectangular space of given area allotted to each grain fed to the grinding rolls.

- In testimony whereof, I have hereunto set my hand.

ALEXANDER GILLESPIE; 

